20681807 is an odd 8-digits composite number following 20681806
and preceding 20681808 . In scientific notation, it is written as 2.0681807 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 19782576 positive integers (up to 20681807) that are relatively prime to 20681807.
20681807 has 4 divisors, whose sum is 21581040
The reverse of 20681807 is 70818602
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty million six hundred eighty-one thousand eight hundred seven
Scientific notation
2.0681807 × 10^7
Engineering notation
2.0681807 × 10^6
Prime Factorization
23 × 899209
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20681807
Product of the distinct prime numbers
The prime factorization of 20681807 is 23 × 899209.
Since it has a total of 2 prime factors.
4 , 5 , 15 , 92 , 98 , 41 , 5589 , 3068 , 77996 , 16216 , 363013 , 674569 , 3256698 , 8058281 , 10951690 , 9973132 , 967217131 , 149400491 , 1574373243 , 803929803
n×2
41363614
n×3
62045421
n×4
82727228
n×5
103409035
n÷2
10340903.5
n÷3
6893935.6666667
n÷3
5170451.75
n÷5
4136361.4
n2
427737140785249
n3
8.8463769924523E+21
n4
1.8295906160714E+29
n5
3.78392400106E+36
2 √n
4547.7254754437
3 √n
274.4918749247
4 √n
67.436825810856
5 √n
29.048097673119
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20681806
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20681807 can be divided by 4 positive divisors.
The sum of these divisors (counting 20681807) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110111001010001001111
3
Ternary
1102220202002212
4
Quaternary
1032321101033
5
Quinary
20243304212
6
Senary
2015141035
8
Octal
116712117
10
Decimal
20681807
12
Duodecimal
6b1477b
16
Hexadecimal
13b944f
20
Vigesimal
6954a7
36
Base36
cba6n
md5
368922fe685055fb6991f22cb883d370
sha1
8839b9c1ed6ab2ae361d213344a72835e40c2dd7
sha256
bd0b00fa78377b6e1db89591c70002ba1809d2ea2a91406f317438631dc70933
sha512
4a1ac6975c24fbdb815eabe9f4aa1ea6325df24d5bf0e4aab52b5f5e17607ac85cfc95296d4559b6bdd75b8f91bba63ef9c2af5650fef8635ee341a48a4f30f1
ripemd-160
382508de481e07ad5acdff984ec8d008b34f981b
Diameter
41363614
Circumference
129947625.86832
Area
1.3437758591584E+15
Volume
3.7055617293832E+22
Surface area
5.3751034366338E+15
Circumference
129947625.86832
Perimeter
82727228
Area
427737140785249
Diagonal
29248491.953783
Surface area
2566422844711494
Volume
8.8463769924523E+21
Space diagonal
35821940.516334
Perimeter
62045421
Area
1.8521561503107E+14
Altitude
17910970.258167
Surface area
1.8521561503107E+14
Volume
1.042555526716E+21
Height
9749497.3179276